There are two different types of plastic build up. The first type is caused by the friction of the bit cutting into the plastic, and this is bad news for your drill press. The second type is caused by the bit contacting an edge or surface in the plastic and this can be a problem for you if you are using a CNC router
The good news is that there are several ways to deal with these problems, which we will discuss below.
cnc bit gets plastic build up when drilling